Sandra Wallach
Insider
First SEC filing: May 10, 2021 · Latest: May 10, 2021
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 21, 2025 | AMPX | S | 28,390 | $6.82 | $193,620 | 1,005,275 Direct | -2.75% | Disposed | 41.8% (price as of 2026-10-02) |
| May 21, 2025 | AMPX | S | 27,595 | $2.43 | $67,056 | 1,033,665 Direct | -2.60% | Disposed | 297.9% (price as of 2026-10-02) |
| March 19, 2025 | AMPX | A | 383,260 | · | · | 1,061,260 Direct | +56.53% | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2025 | AMPX | S | 18,142 | $3.13 | $56,784 | 678,000 Direct | -2.61% | Disposed | 208.9% (price as of 2026-10-02) |
| Nov. 21, 2024 | AMPX | S | 17,158 | $1.96 | $33,630 | 696,142 Direct | -2.41% | Disposed | 393.4% (price as of 2026-10-02) |
| Aug. 21, 2024 | AMPX | S | 17,606 | $1.04 | $18,310 | 713,300 Direct | -2.41% | Disposed | 829.8% (price as of 2026-10-02) |
| May 22, 2024 | AMPX | S | 8,245 | $1.36 | $11,213 | 730,906 Direct | -1.12% | Disposed | 611.0% (price as of 2026-10-02) |
| May 21, 2024 | AMPX | S | 10,549 | $1.33 | $14,030 | 739,151 Direct | -1.41% | Disposed | 627.1% (price as of 2026-10-02) |
| March 19, 2024 | AMPX | A | 749,700 | · | · | 749,700 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 14, 2022 | AMPX | A | 145,590 | · | · | 145,590 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 14, 2022 | AMPX | A | 582,360 | · | · | 582,360 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 2, 2021 | INVE | F | 136 | · | · | 106,544 Direct | -0.13% | Disposed | (price as of 2026-10-02) |
| Aug. 2, 2021 | INVE | A | 393 | · | · | 106,680 Direct | +0.37% | Acquired | (price as of 2026-10-02) |
| July 30, 2021 | INVE | F | 541 | · | · | 106,287 Direct | -0.51% | Disposed | (price as of 2026-10-02) |
| July 1, 2021 | INVE | F | 865 | · | · | 106,828 Direct | -0.80% | Disposed | (price as of 2026-10-02) |
| May 5, 2021 | INVE | F | 70 | · | · | 107,693 Direct | -0.06% | Disposed | (price as of 2026-10-02) |
| May 5, 2021 | INVE | A | 201 | · | · | 107,763 Direct | +0.19% | Acquired | (price as of 2026-10-02) |
| April 30, 2021 | INVE | F | 541 | · | · | 107,562 Direct | -0.50% | Disposed | (price as of 2026-10-02) |
| April 1, 2021 | INVE | F | 861 | · | · | 108,103 Direct | -0.79% | Disposed | (price as of 2026-10-02) |
| March 2, 2021 | INVE | F | 84 | · | · | 108,964 Direct | -0.08% | Disposed | (price as of 2026-10-02) |
| March 2, 2021 | INVE | A | 248 | · | · | 109,048 Direct | +0.23% | Acquired | (price as of 2026-10-02) |
| Feb. 12, 2021 | INVE | F | 2,245 | $12.85 | $28,848 | 108,800 Direct | -2.02% | Disposed | -81.7% (price as of 2026-10-02) |
| Feb. 1, 2021 | INVE | F | 642 | $8.41 | $5,399 | 111,045 Direct | -0.57% | Disposed | -72.1% (price as of 2026-10-02) |
| Dec. 31, 2020 | INVE | F | 1,028 | $8.50 | $8,738 | 111,687 Direct | -0.91% | Disposed | -72.4% (price as of 2026-10-02) |
| Nov. 13, 2020 | INVE | F | 1,946 | $6.72 | $13,077 | 112,715 Direct | -1.70% | Disposed | -65.0% (price as of 2026-10-02) |
| Nov. 2, 2020 | INVE | F | 172 | · | · | 114,661 Direct | -0.15% | Disposed | (price as of 2026-10-02) |
| Nov. 2, 2020 | INVE | A | 496 | · | · | 114,833 Direct | +0.43% | Acquired | (price as of 2026-10-02) |
| Oct. 30, 2020 | INVE | F | 1,838 | $6.53 | $12,002 | 114,337 Direct | -1.58% | Disposed | -64.0% (price as of 2026-10-02) |
| Oct. 1, 2020 | INVE | F | 865 | $6.06 | $5,242 | 116,175 Direct | -0.74% | Disposed | -61.2% (price as of 2026-10-02) |
| Aug. 14, 2020 | INVE | F | 1,945 | $5.21 | $10,133 | 117,040 Direct | -1.63% | Disposed | -54.9% (price as of 2026-10-02) |
| Aug. 4, 2020 | INVE | A | 216 | · | · | 118,985 Direct | -0.18% | Disposed | (price as of 2026-10-02) |
| Aug. 4, 2020 | INVE | A | 626 | · | · | 119,201 Direct | +0.53% | Acquired | (price as of 2026-10-02) |
| July 31, 2020 | INVE | F | 108 | $5.12 | $553 | 118,575 Direct | -0.09% | Disposed | -54.1% (price as of 2026-10-02) |
| July 1, 2020 | INVE | F | 865 | $4.82 | $4,169 | 118,683 Direct | -0.72% | Disposed | -51.2% (price as of 2026-10-02) |
| May 15, 2020 | INVE | F | 1,895 | $3.90 | $7,390 | 119,548 Direct | -1.56% | Disposed | -39.7% (price as of 2026-10-02) |
| May 1, 2020 | INVE | F | 105 | $2.96 | $311 | 121,443 Direct | -0.09% | Disposed | -20.6% (price as of 2026-10-02) |
| May 1, 2020 | INVE | F | 105 | $2.96 | $311 | 123,443 Direct | -0.08% | Disposed | -20.6% (price as of 2026-10-02) |
| Feb. 14, 2020 | INVE | F | 2,300 | $5.11 | $11,753 | 122,557 Direct | -1.84% | Disposed | -54.0% (price as of 2026-10-02) |
| Jan. 31, 2020 | INVE | F | 128 | $4.74 | $607 | 124,857 Direct | -0.10% | Disposed | -50.4% (price as of 2026-10-02) |
| Dec. 31, 2019 | INVE | F | 1,022 | $5.64 | $5,764 | 124,985 Direct | -0.81% | Disposed | -58.3% (price as of 2026-10-02) |
| Nov. 15, 2019 | INVE | F | 1,945 | $5.07 | $9,861 | 126,007 Direct | -1.52% | Disposed | -53.6% (price as of 2026-10-02) |
| Nov. 4, 2019 | INVE | A | 20,000 | · | · | 127,952 Direct | +18.53% | Acquired | (price as of 2026-10-02) |
| Nov. 1, 2019 | INVE | F | 432 | $4.95 | $2,138 | 107,952 Direct | -0.40% | Disposed | -52.5% (price as of 2026-10-02) |
| Oct. 1, 2019 | INVE | F | 864 | $5.32 | $4,596 | 108,384 Direct | -0.79% | Disposed | -55.8% (price as of 2026-10-02) |
| Aug. 15, 2019 | INVE | F | 1,945 | $5.00 | $9,725 | 109,248 Direct | -1.75% | Disposed | -53.0% (price as of 2026-10-02) |
| July 1, 2019 | INVE | F | 864 | $5.32 | $4,596 | 111,193 Direct | -0.77% | Disposed | -55.8% (price as of 2026-10-02) |
| April 1, 2019 | INVE | F | 3,796 | $4.89 | $18,562 | 113,974 Direct | -3.22% | Disposed | -51.9% (price as of 2026-10-02) |
| Feb. 15, 2019 | INVE | F | 2,299 | $5.00 | $11,495 | 117,770 Direct | -1.91% | Disposed | -53.0% (price as of 2026-10-02) |
| Nov. 15, 2018 | INVE | F | 1,945 | $5.96 | $11,592 | 120,069 Direct | -1.59% | Disposed | -60.6% (price as of 2026-10-02) |
| Oct. 31, 2018 | INVE | A | 5,000 | · | · | 122,014 Direct | +4.27% | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2018 | INVE | F | 1,945 | $6.06 | $11,787 | 117,014 Direct | -1.64% | Disposed | -61.2% (price as of 2026-10-02) |
| May 15, 2018 | INVE | F | 1,906 | $3.72 | $7,090 | 118,959 Direct | -1.58% | Disposed | -36.8% (price as of 2026-10-02) |
| May 9, 2018 | INVE | A | 40,000 | · | · | 120,865 Direct | +49.47% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2018 | INVE | F | 9,135 | $3.85 | $35,170 | 80,865 Direct | -10.15% | Disposed | -39.0% (price as of 2026-10-02) |
| March 6, 2017 | INVE | A | 90,000 | · | · | 90,000 Direct | · | Acquired | (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Sept. 14, 2022 | AMPX | Stock Option (right to buy) | Common Stock | $2.61 | April 13, 2032 | 145,590 | Acquired |
| Sept. 14, 2022 | AMPX | Stock Option (right to buy) | Common Stock | $1.78 | Aug. 22, 2031 | 582,360 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2021 | $180,769 | $34,875 | $12,147 | · | · | · | $14,490 | $242,281 |
| 2020 | $300,000 | $6,250 | $6,708 | · | · | · | $23,133 | $336,091 |
| 2018 | $272,500 | $12,500 | $166,050 | · | · | · | $18,583 | $469,633 |
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2024 | $451,001 | $293,150 | $2,024,190 | · | · | · | $600 | $2,768,941 |
| 2023 | $373,006 | $242,450 | · | · | · | · | $600 | $616,056 |
| 2022 | $299,998 | $255,756 | · | $232,466 | · | · | $600 | $788,820 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.